[project management] Document :bridgesupport_cflags option.
fix table size
[project management] add document about :codesign_for_development and :codesign_for_release options
A new motion command does not support option -v

The option is missed for motion command. Replaced it with `--version`

```bash
$ motion -v
[!] Unknown arguments: -v
```
Merge pull request #29 from miry/patch-2

A new motion command does not support option -v